Rational numbers MCQs Quiz Multiple Choice Questions & Answers

1. -(-x) is same as

1. -x
2. x
3. 1/x
4. -1/x

2. A number of the form p/q is said to be a rational number if

1. p and q are integers
2. p and q are integers and p is not qual to zero.
3. p and q are integers and q is not qual to zero.
4. p and q are integers and p and q both are not equal to zero.

3. Addition is associative for

1. Natural numbers
2. Whole Numbers
3. Rational Numbers
4. All of these

4. Between any two rational numbers, there lie:

1. two rational number
2. No rational number
3. infinite rational numbers
4. infinite fractions

5. If x be any rational number, than x+0 is

1. x
2. -x
3. Not defined

6. If y be the reciprocal of rational number x, then the reciprocal of y will be

1. x
2. y
3. x/y
4. y/x

7. One (1) is

1. the identity for addition of the rational number
2. the identity for subtraction of the rational number
3. the identity for multiplication of the rational number
4. the identity for division of the rational number

8. Rational numbers are not closed under

1. Subtraction
2. Division
3. Addition
4. Multiplication

9. The additive inverse of a/b is

1. -b/a
2. b/a
3. a/b
4. -a/b

10. The reciprocal of 0 is

1. 1
2. -1
3. Not defined

11. The reciprocal of 1 is

1. 1
2. -1
3. Not defined

12. The reciprocal of -1 is

1. 1
2. -1
3. Not defined

13. The reciprocal of a negative rational number

1. is a positive rational number
2. is a negative rational number
3. can be either a positive or a negative rational number
4. does not exist

14. The sum of -3/2 and 1/2 is

1. -1
2. -2
3. 4
4. 3

15. The value of (-4/3) - (-1/3) is

1. -2
2. -3
3. 2
4. -1

16. There are ........... number of rational numbers between two rational numbers

1. Zero
2. Unlimited
3. 1
4. 2

17. What number is equivlant to -2/3

1. 2/3
2. -3/6
3. -4/-6
4. -4/6

18. Which of the following rational numbers is equivalent to 2/3?

1. 3/2
2. 4/9
3. 4/6
4. 9/4

19. Which of the following is neither appositive nor a negative rational number?

1. 1
2. Such a rational number doesnt exist
3. Zero

20. Which of the following is not true?

1. rational number are closed under addition
2. rational number are closed under subtraction
3. rational number are closed under multiplication
4. rational number are closed under division

21. Which of the following is the identity element?

1. 1
2. -1
3. Zero

22. Which of the following is the Multiplicative identity for rational numbers?

1. 1
2. -1
3. zero

23. Which of the following rational numbers is in standard form?

1. 20/30
2. 10/4
3. 1/2
4. 1/-3

24. Zero (0) is

1. the identity for addition of the rational number
2. the identity for subtraction of the rational number
3. the identity for multiplication of the rational number
4. the identity for division of the rational number